Centrifugal separator.



D. B. WESTON.

CENTRIFUGAL SEPARATOR.

APPLICATION FILED NOV. 15. 1913.

Patented Sept. 17,1918.

wide,

- DAVID B. WESTON, OF SHARON, MASSACHUSETTS.

CENTRIFUGAL SEPARATOR.

To all whom it ma concern:

Be it known that I, DA ID B. WESTON citizen of the United States, andresident of Sharon, county of Norfolk, State of Massachusetts, haveinvented certain new and useful Improvements in Centrifugal Separators,of which the following'is a specification.

This invention relates to centrifugal machines intended for use inclarifying liquids by separating the solid content therefrom bycentrifugal action. The-invention is particularly applicable for use inclarifying cane I juice in place of the filter presses commonly used toextract the dirt or sediment from the cane juice, thus avoidmg the slowprocess of filtration and the frequent clogging-up.

of the filter bags or screens.

The invention comprises generall speaking, a centrifugal receptacleproyi ed with openings inits bottom for the discharge of the solidmatter extracted and having an annular-t'op covering the peripheralportion of the rece tacle over the inside edge of which the clarifiedliquid escapes, combined with means for introducing the liquid to betreated into the peripheral bottom portion of the receptacle,and abafiie plate in the upper portion of the receptacle extended inwardlybeceptacle, so that it may be removed from operative position in orderto give the at yond the inside edge of the top, so as to prevent thedirect flow of the sediment-containing liquid ,to the outlet before thesediment has been separated therefrom.

Another feature of the invention consists in means for detachablysecuring the deflector ring in the bottom portion of the retendant freeaccess when discharging the solid content through the openings in thebottom' of the receptacle. Another feature of the present inventionconsists in the arrangement of the inlet pipe to deliver the liquid tobe treated through the bottom of the receptatcle into the interior.

These and other features of the invention will be fully described inthis specification and will be defined in the claims forming partthereof.

' Specification of Letters Patent.

In the drawings I have illustrated some the construction for detachablyholding the deflector in place; q

Fig. 3 illustrates a modified construction for holding the deflector rinin place;

Fig. 1 is a side elevation o Patented Sept. 17, 1918. Application filedNovember 15, 1918. Serial No. 801,155.

the same; and- Figs. 5 and 6 illustrate still another form of'means fordetachably fastening the deflector or spreader member in position.

In the drawings, I have illustrated the invention applied to acentrifugal machine comprising a cylindrlcal receptacle a suspended froman overhead support by a yratory rotary shaft a( to whoselower on .is

secured a radial armed spider a carrying the bottom or floor a of thereceptacle a.

A The bottom of the receptacle is downwardly'inclined toward the centerof the machine and is continued some distance beyond the peripheryof'the spider, as shown at a, so as to leave space above its lower edgefor an inlet or'supplypipe 5 through which the liquid to be treatedisconducted to the interior of the rotating receptacle. The outlet ornozzle of the pipe 6 is, of course, di-

rected outwardly, and the centrifugal force,-

due to the rotation ofthe receptacle, causes liquid to flow up betweenthe arms of the spider and beneath the deflector ring a to theperipheral wall of the receptacle.

- The peripheral portion of the receptacle is overed at the top by anannular top or cover a which acts as a dam or barrier to hold backthesolid matter extrected as it walls-up against the peripheral wall ofthe receptacle, while allowing the clarified liquid to escape over itsinner edge after the wall ofliquid is built into a suflicient thick nessto flow around this inside edge. A flanged hood or ring a located aslight distance above and inside of the inner edge of the top a servesto deflect the clarified liquid outwardly into the surrounding curb.

The receptacle is provided with a series ward the periphery of ofvertical radially ,rranged wings or diaphragms d projected inwardly fromthe peripheral wall, preferably extending from top to bottom of thereceptacle.

As the most efiicient work is secured by conducting the liquidintroduced directly tothe receptacle, I provide a deflector ring a,which is detachably held 'in place in the lower art of the receptacle.

According to the form shown in Fig. 2, this ring 0 is made in sections,one to each compartment included between ad acent win of the machine.Each wlng is provided at its inside edge, near the bottom, with a pairof supporting plates 0 on opposite sides of the wing, and as in thisform it is intended to remove each section by drawing them toward thecenter of the basket, the plates are formed with wedge-shaped ra sedledges c forming diagonal shoulders against which the correspondinglyoblique end portions of the ring sections may abut, to, prevent theirbeing thrown outwardl from position by centrifugal force when t emachine is rotating. The. plates are also provided with undercut lugs orhooks which overhang the outer cornersof the ring sections to preventthe outer edge from lifting. The

inner edges of the plates are :detachably locked in place by means ofthe swinging latches or dogs 0 which are slotted to fit edge thereofraising the latch or dog '0, then over the respective wings by whichthey are pivotally sup orted. 0 remove a sectlon the operator as merelyto grasp the inner drawing the section inwardly toward the center of themachine; After the deflector has thus been removed, he has free'a'ccessto the compartment for the pn scooping out, through the bottom, t esolid sectional rin 0 may be replaced and the ma:

chine starte for anotherrun. r 1

In Figs. 3 and 4, I'have' shown a 8.1.1.-..- what difl'erentconstruction for fastening. thering sections in lace. In this case thereare upper angle p ates arranged some distance above the supportingplates 0' and between said upper plates '0" and the ring section 0, Iinsert a wedge plate or'ke a which serves to hold the adjacent ends 0.the

ring sections firmly seated in position. As shown in Fig. 3, theseplates are slotted midwa of their sides, so as to pass beyond the insideed e of the supporting wing.

A slig tly modified form of wedge is shown in Figs. 5 and 6. In thatcase thesection rings 0 instead ofhaving their rear corners -cut away topermit removal inwardly, are cut away slightly in front of the insideedge of the wing, as shown at c, to

.in the top ose of 1 atj-I claim is: matter walled-up on the inside ofthe pe- I -f i 1. In *a' centrifugal ripheral wall. After suchdischarge-the;

permit the removal of thedeflector section outwardly. 'In this case eachdeflector section is supported on underlying angle plates 0 and arewedged in place by means of a slotted key 0 passed between the top ofthe adjacent sections and the superimposed angle plates 0.

The underlying angle plates 0 have turned-up lugs 0 at their outer endsto hold the sections against outward movement when the machine isrunning, but in removing the sections the outer edges may be lifted upover these edges when the key is withdrawn.

It will, therefore, be seen that provision may be made for removing thedeflector ring over toward the center or the outside of the machine,when it is desired to get them out of the way for the purpose ofdischarging the solid matter.

The action of the'machine is as shown. The-raw liquid being introducedthrough pipe 6, is deflected along the bottom of the receptacle 'to theoutside wall against which 1t walls-up under centrifugal action. In this'When there has been sufiicient accumulation of liquid toreach the lineof the outlet of. the receptacle, the light or clarified liquid escapesover the top into the curb leaving the solid residium walled-up insidethe receptacle. The baflie plate 6 acts to prevent any direct flow ofthe newly introduced unclarified liquid to the outlet orifice, sinceall" escaping liquid must pass around the outside edge. of this baflleplate 6 before escaping through the top of the rece tacle." Y

v --separator, the combination-of a'rotary receptacle provided with Yannular top and bottom "members covering "theperipheral zone of thereceptacle, an annular 'plate arranged at a distance from the peripheralwall and adjacentto the bottom, a liquid feed pipe arranged to projectthrough the bottom to deliver liquid into the space between the saidannular plate and the bottom when the receptacle is rotated, and meansfor detachably holding said plate in its operative osition and allowingit to be raised to faci itate the discharge of the solid separatedmatter through the bottom opening, substantially as described.

. 2. In a' centrifugal receptacle the combination with the internalradial wings, supporting plates secured thereto, an-annular sectionaldeflector resting upon said supportmg plates adjacent to the bottom, andretaining devices for detachably locking said annular plates in positionso as to permit amps? their removal to facilitate the discharge of solidmatter through the bottom of the receptacle, substantially as described.

In a centrifugal receptacle the combination of the internal radialwings, support ing plates secured thereto, a sectional deflector restingupon said supporting plates, and pivotal latches adapted to engage andremovably hold said deflector sections against the supporting plates,substantially 10 as described.

In Witness whereof I have subscribed the above specification.

DAVID B. WESTON.

In the presence of GEORGE A. ROCKWELL, GEO. N. GODDARD.

